Covalent bonding strategy to enable non-volatile organic cation perovskite for highly stable and efficient solar cells

Inorganic Framework Composition Engineering for Scalable Fabrication of Perovskite/Silicon Tandem Solar Cells

“…The improvement of FF and J sc could be attributed to the alleviation of the carrier accumulation problem at the interface, which improves the carrier transmission. 26,43,49 The integrated J sc values of the devices with different framework treatment calculated from the external quantum efficiency (EQE) curves (Figure 4g) are consistent with the J−V characterization. In the short term maximum power point (MPP) tracking test under one-sun illumination condition (Figure 4h), the DS+FHT and TS+FHT conditions showed better photostability, and the DS device had begun to decay in the MPP test within 5 min, which might be related to the excessive residue of PbI 2 .…”

“…Ligand strategies have emerged as a prominent approach to alleviating the dense arrangement of PbI 2 in the first step. By forming ligands with PbI 2 and subsequently replacing them with organic salts, these strategies influence reaction pathways and rates, driving favorable perovskite formation. − While in the cases of hybrid two-step method prepared on textured silicon as substrates, the first step is more challenging to control the inorganic components or form ligands compared with the solution method. Yi et.al introduced a Cl-containing alloy-mediated approach in a sequential vacuum evaporation method, enhancing perovskite film quality by promoting organic ammonium halide diffusion and perovskite conversion reaction .…”

Bandgap Engineering and Enhancing Optoelectronic Performance of a Lead-Free Double Perovskite Cs2AgBiBr6 Solar Cell via Al Doping

“…The presence of covalent bonds in double perovskite solar cells serves multiple purposes, including exerting influence on electronic properties, promoting efficient charge transport, and enabling engineering of the material’s attributes. All of these factors collectively enhance the photovoltaic performance of the solar cell, making it more efficient in converting sunlight into electricity. − …”

B‐Site Co‐Doping Coupled with Additive Passivation Pushes the Efficiency of Pb–Sn Mixed Inorganic Perovskite Solar Cells to Over 17%

“…Previous studies have reported that the deviation of the slope from unity kT q −1 is an indicator of trap‐assisted recombination in PSCs. [ 48 ] Therefore, the smaller slope suggests that the trap‐assisted recombination within the BHA device was effectively suppressed, which often leads to the enhancement of V oc . The J sc versus light intensity relationship shown in Figure S16 (Supporting Information) indicates that the BHA device with an α value of 0.95 demonstrates higher charge carrier extraction efficiency compared to the control device with an α value of 0.91.…”